Midnight Petrograd... A night watch spots a shadow trying to sneak by. "Stop! Who goes there? Documents!" The frightened person chaotically shuffles through his pockets and drops a paper. A soldier picks it up and reads slowly, with difficulty: "U.ri.ne A.na.ly.sis"... "Hmm... a foreigner, sounds like..." "A spy, looks like.... Let's shoot him on the spot!" Then reads further: "'Proteins: none, Sugars: none, Fats: none...' You are free to go, proletarian comrade! Long live the World revolution!"